1406144520161 has 2 divisors, whose sum is σ = 1406144520162. Its totient is φ = 1406144520160.

The previous prime is 1406144520103. The next prime is 1406144520167. The reversal of 1406144520161 is 1610254416041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1354186053025 + 51958467136 = 1163695^2 + 227944^2 .

It is a cyclic number.

It is not a de Polignac number, because 1406144520161 - 2¹⁸ = 1406144258017 is a prime.

It is not a weakly prime, because it can be changed into another prime (1406144520167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 703072260080 + 703072260081.

It is an arithmetic number, because the mean of its divisors is an integer number (703072260081).

Almost surely, 2^{1406144520161} is an apocalyptic number.

It is an amenable number.

1406144520161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1406144520161 is an equidigital number, since it uses as much as digits as its factorization.

1406144520161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 35.

The spelling of 1406144520161 in words is "one trillion, four hundred six billion, one hundred forty-four million, five hundred twenty thousand, one hundred sixty-one".